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Old 10th November 2019, 08:13   #11
Canonite
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I’ve always suspected these things sap more from the battery than they put in.
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Old 10th November 2019, 10:44   #12
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Iíve always suspected these things sap more from the battery than they put in.
The electricity travels in one direction only.--From the solar panel to the battery. A diode stops any discharge through the panel.-- ( Bit like your alternator diode pack. )


PS. What was it that made you think they absorbed power ??
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Old 10th November 2019, 11:49   #13
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A diode stops any discharge through the panel.
Not all charging devices have this protection though Jon. Not all manufacturers offer a comprehensive specification either so it can be a struggle to find out. Let the buyer beware!

Unless you have no mains power on site, a good quality 240v smart maintenance charger is a safer bet. I can recommend C-tek and the 0.8 amp model is not expensive either to buy or run.

Simon
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Old 10th November 2019, 13:52   #14
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Not all charging devices have this protection though Jon. Not all manufacturers offer a comprehensive specification either so it can be a struggle to find out. Let the buyer beware!

Unless you have no mains power on site, a good quality 240v smart maintenance charger is a safer bet. I can recommend C-tek and the 0.8 amp model is not expensive either to buy or run.

Simon
I have examples of both types of 240v Mains Chargers. Modern and one ( CRYPTON ~ Made in England ) closing on half a century old still performing well.

The beauty of the Solar Panel chargers is that they are independent. No need for mains connections. Can be used miles away from the National Grid. They work well and yes, according to the blurb on the boxes they came in, they are one way current protected and even have a fuse in the leads. That to avoid damage when connected to the WRONG battery post terminals ... easily done in poor light conditions. The Clamps are colour coded ~ see those in OP image so no excuse really but... as the saying goes ... 'appens.
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Old 10th November 2019, 20:12   #15
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Originally Posted by SD1too View Post
Not all charging devices have this protection though Jon. Not all manufacturers offer a comprehensive specification either so it can be a struggle to find out. Let the buyer beware!

Unless you have no mains power on site, a good quality 240v smart maintenance charger is a safer bet. I can recommend C-tek and the 0.8 amp model is not expensive either to buy or run.

Simon
All solar panels must have it as they would GLOW over night without this diode.---
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